body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar {
    border-bottom: 1px solid #dee2e6;
}

.card {
    border-radius: 0.5rem;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}

.alert {
    margin-bottom: 1rem;
}

footer {
    border-top: 1px solid #dee2e6;
    color: #6c757d;
}